Leanora A. Ackley (b-1841 Ct)

Dear Ackley Researchers, I'm looking for information on Leanora A. Ackley born in Ct. in 1841.Her parents were Amasa and Amanda (Clark) Ackley of East Haddam, Ct.My gr grandmother, Sophronia Isadora Silliman, was born in 1865, Ct.She was the only daughter of Henry E. Silliman and Leanora A. Ackley.She appears on the 1870 East Haddam, Ct, census as a 5 year old living with her grandparents, Amasa and Amanda (Clark) Ackley.In 1880 she's living with cousins.Henry E. Silliman was the youngest son of Eliphalet and Nancy (Fuller) Silliman.He was a shoemaker and still at home on the 1860 East Haddam census.He and Leanora were married Dec 16, 1863.My problem is that I can't seem to find him or Leanora on any 1870 census index, but I did find a Henry Silliman ( 37 yrs, shoe cutter, born Ct.) living in Brooklyn, New York, and married to Nettie on the 1880 census.This raises questions--were they divorced or did Leanora die young.I would love to know more as Sophronia raised my father and I have several photos of her and her husband Willard A. Chapell. Thank you for any help, Jean Bell jsmith7743@aol.com